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Study of 60M US seniors strengthens link between air pollution and premature death

Green Car Congress

and of 10 ppb in ozone were associated with increases in all-cause mortality of 7.3% (95% confidence interval [CI], 7.1 of less than 12 μg per cubic meter and ozone of less than 50 ppb, the same increases in PM 2.5 and ozone were associated with increases in the risk of death of 13.6% (95% CI, 13.1 and 1.1% (95% CI, 1.0

Pollution 265
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Study finds air quality models significantly underestimate traffic as source of NOx in Europe

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Using statistical methods, the scientists infer emissions from these data within a radius of about one kilometer of the measurement location. Lee (2017) “Urban eddy covariance measurements reveal significant missing NO x emissions in Central Europe,” Scientific Reports 7, 2536 doi: 10.1038/s41598-017-02699-9. —Thomas Karl.

Europe 150
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HEI study finds no heart effects of ozone exposure in healthy older adults; lungs affected at relatively low exposures

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The largest systematic study ever conducted of human volunteers exposed to ozone air pollution has found no evidence of effects on the heart in its healthy, older participants, but did find effects on the volunteers’ ability to breathe, even at low ambient levels. Possible pathways by which ozone may cause adverse health effects.

Ozone 150
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Study finds fleet switch from PFI to GDI engines will result in net reduction in global warming

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We use the data to quantify the effects of engine technology, emission standards, and cold-start on emissions. We estimate ozone and SOA formation potential. All the vehicles were tested using commercial gasoline that met the summertime California fuel standards. —Saliba et al. of the data. of the data. Click to enlarge.

Fleet 207